I noticed a few times that my activity on the internet is being monitorized by Facebook. If I were to search for a vacation, a few minutes later on facebook I would receive an ad with that destination. Once I was chatting with my boyfriend in FB messenger about the new phone I got. Within minutes he received an ad about that phone. Isn't that a coincidence! More scarier than facebook watching us is people not aknowledging this and take action. I tried to talk with my colleagues and friends about this and they just shrug, saying that they have nothing to hide.